So we only catch them, torture them as much as we want and then act like we do good because at some point we "release" them to torture them again in the future.
And don't bring up "consent". Horseshoe Crabs are incapable of consenting or not-consenting to anything because they don't have an advanced enough brain.
And they literally and actually save hundreds of thousands of human AND animal lives by giving blood, which If you've never done it (Why Not?) Does not hurt a bit.